CN101478381B - Data packet processing method, system and apparatus in semi-continuous scheduling - Google Patents
Data packet processing method, system and apparatus in semi-continuous scheduling Download PDFInfo
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Abstract
The embodiment of the invention discloses a method for processing data packets in semi-persistent scheduling. The method comprises the following steps: a terminal receives an initial transmitted data packet that is continuously scheduled by a base station, and judges whether the decoding of the persistently-scheduled data packet is successful; and if the decoding of the persistently-scheduled data packet is successful, the data detection is carried out to a sequentially-received retransmitted data packet with new process identifier; whether the retransmitted data packet is the retransmission error of the persistently-scheduled data packet is judged according to the detection result, if the retransmitted data packet is the retransmission error of the persistently-scheduled data packet, the retransmitted data packet is discarded; if the decoding of the persistently-scheduled data packet is not successful, a decoding failure feedback is transmitted to a base station; the base station receives the failure feedback, performs the priority scheduling of retransmission of the persistently-scheduled data packet in priority scheduling and allocates the process identifier to the persistently-scheduled data packet in the scheduling signaling; and the terminal performs the retransmission, mergence and decoding of the received retransmitted data packet with the allocated process identifier and the initial transmitted data packet. The embodiment of the invention also discloses a system and a device for processing data packets in semi-persistent scheduling. The method solves the problems of data packet loss and reception confusion in semi-persistent scheduling.
Description
Technical field
The present invention relates to field of wireless transmission, relate in particular to a kind of processing method, system and device of data packets in semi-persistent scheduling.
Background technology
In Long Term Evolution (LTE) system, introduced the semi-persistent scheduling mechanism of packet.So-called semi-continuous scheduling is meant the mode that adopts continuous dispatching to combine with dynamic dispatching for the transmission of particular traffic data bag.Such as, ip voice carries in (VOIP) business, and the initial transmission of VoP adopts continuous dispatching, retransmits and adopt dynamic dispatching, and the initial transmission of noise data bag adopts dynamic dispatching with retransmitting.
Said continuous dispatching; Be meant the transformat that the base station fixes for allocation of packets fixed resource (comprising incident, frequency, code channel etc.) and appointment; Packet is sent out to the terminal at the transformat of the resource location that distributes with appointment, and the terminal receives packet on predetermined resource.Said dynamic dispatching is meant that the base station sends dispatch and will on which resource, with which kind of transformat send with this packet of indicating terminal sending packet forward direction terminal, and the terminal then receives or send packet on the indicated resource of dispatch.
The re-transmission of packet adopts the physical layer data feedback to retransmit (HARQ) mechanism in the LTE system; Transmitting terminal sends packet; Receiving terminal is according to reception condition feeding back ACK or NACK Indication message, and transmitting terminal determines whether to carry out the repeating transmission of packet according to feedback indication and/or other restrictions (like maximum retransmission etc.) again; The identical data packet that receiving terminal will repeatedly be received is put into buffer memory and is retransmitted merging, thereby realizes the correct reception of packet.
According to the time location that retransmission data packet may is sent, HARQ can be divided into synchronous HARQ and asynchronous HARQ.In the synchronous HARQ; The continuous dispatching mode is adopted in the re-transmission of packet; The transmitting time that is retransmission data packet may is that the base station is predefined; Must be HARQ round-trip delay (RTT) that the terminal receives retransmission data packet may on predefined time resource, and not need the base station before re-transmission, to indicate the process number of retransmission data packet may with the dispatch that shows.Among the asynchronous HARQ; The dynamic dispatching mode is adopted in the re-transmission of packet; Be the transmitting time of retransmission data packet may can be after HARQ RTT, any position before the maximum delay; Therefore the process number of dispatch with the indication retransmission data packet may need be sent to the terminal in the base station before retransmitting, and the initial transmission and the re-transmission of different pieces of information bag are distinguished according to process number in the terminal, and the packet of same process number is put into corresponding cache retransmitted merging.
In semi-persistent scheduling mechanism; Adopt continuous dispatching, retransmit the business data packet that adopts asynchronous HARQ for initial transmission; The process number how receiving terminal understands retransmission data packet may is the key that can packet correctly receive; If it is improper to understand, will cause losing of packet chaotic with Data Receiving, following two kinds of wrong scenes specifically possibly take place:
First kind, referring to Fig. 1, process 5 (process5) is to initial transmission and the packet that retransmits the employing dynamic dispatching, and process 6 (process6) is to adopt continuous dispatching, retransmit the packet that adopts dynamic dispatching to initial transmission, and the mistake generation is specific as follows:
Step 10: the base station sends to the terminal that to comprise process number be 5 dispatch and corresponding packet, dispatch and data-bag lost;
Step 11: the packet of process 6 is sent in the base station to the terminal;
Step 12: the packet that the terminal will receive on the predefine resource is interpreted as process 5: this packet is put into buffer memory, and be the corresponding process number 5 of this buffer memory;
Step 13: terminal this packet of correctly decoding, send the ACK feedback message to the base station;
Step 14: the ACK feedback that base station judges is received is to be directed against nearest process 6 of sending;
Step 15: it is 5 dispatch and corresponding packet that the base station comprises process number to terminal re-sends;
Step 16: since buffer memory process number be 5 packet and can correctly decode that the terminal is with the data packet discarding of this process that receives 5;
Step 17: the ACK feedback message is sent to the base station in the terminal, has caused the data-bag lost of process 5.
Second kind; Referring to Fig. 2, same, process 5 (process5) is to initial transmission and the packet that retransmits the employing dynamic dispatching; Process 6 (process6) is to adopt continuous dispatching, retransmit the packet that adopts dynamic dispatching to initial transmission, and mistake takes place specific as follows:
Step 20: the base station sends to the terminal that to comprise process number be 5 dispatch and corresponding packet, dispatch and data-bag lost;
Step 21: the packet of process 6 is sent in the base station to the terminal;
Step 22: the packet that the terminal will receive on the predefine resource is interpreted as process 5: this packet is put into buffer memory, and be the corresponding process number 5 of this buffer memory;
Step 23: this packet failure of decoding terminals, send the NACK feedback message to the base station;
Step 24: the NACK feedback that base station judges is received is to be directed against nearest process 6 of sending;
Step 25: because the packet of process 5 sends formerly, it is 5 dispatch and corresponding packet that the base station comprises process number to terminal re-sends;
Step 26: the terminal is that 5 packet retransmits merging with the packet of this process that receives 5 and the corresponding process number of buffer memory; Because this receives packet is not the packet of same process with cached data packet; Therefore retransmit and merge failure; The packet of process 6 can not correctly be decoded, and has caused the losing of packet of process 5 simultaneously;
Step 27: the NACK feedback message is sent to the base station in the terminal.
Subsequent base stations is the packet of retransmission process 5 once more, and the result is with step 26: the packet of process 6 can not correctly be decoded, the data-bag lost of process 5.
At present, solving above-mentioned data-bag lost is to be the continuous dispatching obligating process number with receiving chaotic scheme, and dynamic dispatching can only be used other process numbers except that obligating process number.Specifically as shown in Figure 3:
Step 30: the base station sends to the terminal that to comprise process number be 5 dispatch and corresponding packet, dispatch and data-bag lost;
Step 31: the packet that adopts continuous dispatching is sent in the base station to the terminal;
Step 32: the packet that the terminal will receive on the predefine resource is put into buffer memory, and is the corresponding process number of reserving 0 of this buffer memory;
Step 33: the terminal is sent ACK or NACK feedback message according to the decoding situation to the base station;
Step 34: it is 5 dispatch and corresponding packet that the base station comprises process number to terminal re-sends;
Step 35: buffer memory is put into the packet of the process that receives 5 in the terminal, and is the corresponding process number 5 of this buffer memory, and can be not that 0 packet is obscured with this packet and corresponding process number, has avoided the reception confusion of packet and losing of process 5 packets.
Though the method for above-mentioned employing obligating process number can solve data-bag lost and receive chaotic problem; But because total process number is limited; Increase the process number number and can make the process number territory of dispatch need more bits again, increased the expense and the complexity of dispatch.
Summary of the invention
The embodiment of the invention provides a kind of processing method, system and device of data packets in semi-persistent scheduling, loses and receive the problem of confusion in order to solve the prior art data packets in semi-persistent scheduling.
The embodiment of the invention provides a kind of processing method of data packets in semi-persistent scheduling, and this method comprises:
The terminal receives the initial transmitted data packet of base station continuous dispatching, and whether judgement is successful to the decoding of said continuous dispatching packet, if success is then carried out Data Detection with the follow-up retransmission data packet may that has new process identification (PID) that receives;
Judging that according to testing result whether said retransmission data packet may is that mistake to said continuous dispatching packet retransmits, is mistake to said continuous dispatching packet when retransmitting in said retransmission data packet may, abandons said retransmission data packet may.
The embodiment of the invention provides a kind of processing method of data packets in semi-persistent scheduling, and this method comprises:
The terminal receives the initial transmitted data packet of base station continuous dispatching, and whether judgement is successful to the decoding of said continuous dispatching packet, if success is sent the feedback of failing of decoding to said base station;
The base station receives said decoding failure feedback; According to feedback channel and the time difference of sending packet; Judge that this feedback is to the continuous dispatching packet; In all data that need retransmit the re-transmission of priority scheduling continuous dispatching packet and in dispatch for the process identification (PID) of said continuous dispatching allocation of packets, be specially: send dispatch and retransmission data packet may to the terminal, comprise the process identification (PID) of distribution in the dispatch; Later on the re-transmission of said continuous dispatching packet is all adopted the process identification (PID) of said distribution;
Said terminal receives the said retransmission data packet may of the process identification (PID) that has said distribution on the resource of said dispatch indication, retransmission data packet may that receives and said initial transmitted data packet are retransmitted merging and decoding.
The embodiment of the invention provides a kind of processing method of data packets in semi-persistent scheduling, and this method comprises:
Whether the terminal receives the initial transmitted data packet of base station continuous dispatching, judge the decoding of said continuous dispatching packet successful;
If success is then carried out Data Detection with the follow-up retransmission data packet may that has new process identification (PID) that receives; Judging that according to testing result whether said retransmission data packet may is that mistake to said continuous dispatching packet retransmits, is mistake to said continuous dispatching packet when retransmitting in said retransmission data packet may, abandons said retransmission data packet may;
If not success is sent decoding failure feedback to said base station; The base station receives said decoding failure feedback, the re-transmission of priority scheduling continuous dispatching packet and be the process identification (PID) of said continuous dispatching allocation of packets; The retransmission data packet may of the process identification (PID) that has said distribution that said terminal will receive and said initial transmitted data packet retransmit and merge and decoding.
The embodiment of the invention provides a kind of treatment system of data packets in semi-persistent scheduling, and this system comprises:
The base station is used for sending the initial transmitted data packet of continuous dispatching and the retransmission data packet may of dynamic dispatching to the terminal;
The terminal comprises first receiving element, judging unit, detecting unit and processing unit, and said first receiving element is used to receive the initial transmitted data packet of said continuous dispatching; Said judging unit is used for the initial transmitted data packet of said continuous dispatching is decoded, and judges whether decoding is successful; Said detecting unit is used for after said judgment unit judges is decoded successfully, and the follow-up retransmission data packet may that has new process identification (PID) that receives is carried out Data Detection; Said processing unit; Be used for judging according to the testing result of said Data Detection whether said retransmission data packet may is the mistake re-transmission to the initial transmitted data packet of said continuous dispatching; In said retransmission data packet may is mistake to the initial transmitted data packet of said continuous dispatching when retransmitting, and abandons said retransmission data packet may.
The embodiment of the invention provides a kind of treatment system of data packets in semi-persistent scheduling, and this system comprises:
The base station comprises transmitting element and scheduling unit, and said transmitting element is used for the initial transmitted data packet to terminal transmission continuous dispatching; Said scheduling unit is used for receiving decoding failure feedback, the re-transmission of priority scheduling continuous dispatching packet and be the process identification (PID) of said continuous dispatching allocation of packets;
The terminal comprises first receiving element, judging unit, feedback unit, second receiving element and processing unit, and said first receiving element is used to receive said continuous dispatching packet; Said judging unit is used for said continuous dispatching packet is decoded, and judges whether decoding is successful; Feedback unit is used for when said judgment unit judges decoding is not successful, sending decoding failure feedback to said base station; Second receiving element is used to receive the retransmission data packet may of the process identification (PID) that has said distribution; Processing unit is used for said retransmission data packet may and said initial transmitted data packet are retransmitted merging and decoding.
The embodiment of the invention provides a kind of treatment system of data packets in semi-persistent scheduling, and this system comprises:
The base station comprises transmitting element, feedback receiving element, scheduling unit; Said transmitting element is used for the initial transmitted data packet to terminal transmission continuous dispatching; Said feedback receiving element is used for receiving the successfully feedback of decoding; Said scheduling unit is used for sending the retransmission data packet may that has new process number to the terminal; Receiving when feedback decoding failure, the re-transmission of priority scheduling continuous dispatching packet and be the process identification (PID) of said continuous dispatching allocation of packets;
The terminal comprises first receiving element, judging unit, detecting unit, processing unit, feedback unit and second receiving element, and said first receiving element is used to receive said continuous dispatching packet; Said judging unit is used for said continuous dispatching packet is decoded, and judges whether decoding is successful; Said detecting unit is used for after said judgment unit judges is decoded successfully, sends the successfully feedback of decoding to the base station, and the follow-up retransmission data packet may that has new process identification (PID) that receives is carried out Data Detection; Said processing unit; Be used for judging according to the testing result of said Data Detection whether said retransmission data packet may is the mistake re-transmission to said continuous dispatching packet; In said retransmission data packet may is when the mistake of said continuous dispatching packet is retransmitted, and abandons said retransmission data packet may; Said feedback unit is used for when said judgment unit judges decoding is not successful, sending decoding failure feedback to said base station; Said second receiving element is used to receive the retransmission data packet may of the process identification (PID) that has said distribution; Said processing unit also is used for the said retransmission data packet may and the said initial transmitted data packet of the process identification (PID) that has said distribution are retransmitted merging and decoding.
The embodiment of the invention provides a kind of terminal, and this terminal comprises:
First receiving element is used to receive the initial transmitted data packet from the continuous dispatching of base station;
Judging unit is used for said continuous dispatching packet is decoded, and judges whether decoding is successful;
Detecting unit is used for when judgement is decoded successfully, the follow-up retransmission data packet may that has new process identification (PID) that receives being carried out Data Detection;
Processing unit is used for judging that according to testing result whether said retransmission data packet may is that mistake to said continuous dispatching packet retransmits, and is mistake to said continuous dispatching packet when retransmitting in said retransmission data packet may, abandons said retransmission data packet may.
The embodiment of the invention provides a kind of base station, and this base station comprises:
Transmitting element is used for the initial transmitted data packet to terminal transmission continuous dispatching;
Scheduling unit; Be used to receive the decoding failure feedback of self terminal; According to feedback channel and the time difference of sending packet, judge this feedback to the continuous dispatching packet, the re-transmission of priority scheduling continuous dispatching packet and be the process identification (PID) of said continuous dispatching allocation of packets in all data that need retransmit in dispatch; Be specially: send dispatch and retransmission data packet may to the terminal, comprise the process identification (PID) of distribution in the dispatch; Later on the re-transmission of said continuous dispatching packet is all adopted the process identification (PID) of said distribution.In the embodiment of the invention, when the terminal is also decoded successfully in the initial transmitted data packet that receives continuous dispatching, the follow-up retransmission data packet may that has new process identification (PID) that receives is carried out Data Detection, whether decision abandons this retransmission data packet may according to testing result; When receiving initial transmitted data packet but the decoding failure of continuous dispatching at the terminal; The re-transmission of base station priority scheduling continuous dispatching packet and be this continuous dispatching allocation of packets process identification (PID), the retransmission data packet may of the process identification (PID) that has said distribution that the terminal will receive and initial transmitted data packet retransmit and merge and decoding.Through the Data Detection after the success of decoding, and the re-transmission of the priority scheduling continuous dispatching packet after the decoding failure, can avoid losing and receiving confusion of packet.
Description of drawings
Fig. 1 is the successful schematic flow sheet of decoded packet data that the terminal receives continuous dispatching in the prior art;
Fig. 2 is the schematic flow sheet that the terminal receives the decoded packet data failure of continuous dispatching in the prior art;
Fig. 3 is the schematic flow sheet of continuous dispatching obligating process number in the prior art;
Fig. 4 is the method flow sketch map that the embodiment of the invention provided;
Fig. 5 is the schematic flow sheet of the embodiment of the invention one;
Fig. 6 A is the schematic flow sheet of the embodiment of the invention two;
Fig. 6 B is the schematic flow sheet of the embodiment of the invention three;
Fig. 7 is the structural representation of system that the embodiment of the invention provides;
Fig. 8 is the structural representation at terminal that the embodiment of the invention provides;
Fig. 9 is the structural representation of base station that the embodiment of the invention provides.
Embodiment
In order to make that the terminal is understood consistent with the base station to the transmission data in the semi-continuous scheduling; Avoid losing and receiving chaotic of packet; The embodiment of the invention provides a kind of processing method of data packets in semi-persistent scheduling, and in this method, the terminal is when initial transmitted data packet that receives continuous dispatching and correct decoding; The follow-up retransmission data packet may that has new process identification (PID) that receives is carried out Data Detection, and whether decision abandons this retransmission data packet may according to testing result; The terminal is in the initial transmitted data packet that receives continuous dispatching but during decoding error, and the base station is according to the decoding failure feedback at terminal, the re-transmission of priority scheduling continuous dispatching packet and be the process identification (PID) of continuous dispatching allocation of packets in dispatch.
Referring to Fig. 4, the processing method of the data packets in semi-persistent scheduling that the embodiment of the invention provides specifically comprises:
Step 40: the initial transmitted data packet of continuous dispatching is sent in the base station to the terminal;
Step 41: the terminal receives the initial transmitted data packet of said continuous dispatching on the predefine resource, this packet is decoded;
Step 42: judge whether decoding is successful, if success, to step 43, otherwise, to step 44;
Here, the terminal is stored this packet in the unappropriated buffer memory into after receiving the initial transmitted data packet of continuous dispatching, but does not distribute actual process identification (PID) for it.
Step 43: Data Detection is carried out with the retransmission data packet may that has new process identification (PID) of the follow-up base station dynamic dispatching that receives in the terminal; Judge that according to testing result said retransmission data packet may is new data or the mistake of continuous dispatching packet retransmitted, and be that mistake to the continuous dispatching packet abandons this retransmission data packet may when retransmitting in retransmission data packet may;
Step 44: when feed back in the decoding failure of receiving terminal the base station, the re-transmission of priority scheduling continuous dispatching packet, and be the process identification (PID) of continuous dispatching allocation of packets; The retransmission data packet may of the process identification (PID) that has said distribution that the terminal will be received and initial transmitted data packet retransmit and merge and decoding.
Step 43 can be refined as:
Step S01: the successfully feedback of decoding is sent to the base station in the terminal;
Step S02: the base station receives the successfully feedback of decoding, and according to feedback channel and the time difference of sending packet, judges this feedback to the continuous dispatching packet, and then other packets are sent in scheduling;
Step S03: the terminal receives the retransmission data packet may that has new process identification (PID) from the base station dynamic dispatching; Retransmission data packet may is carried out Data Detection; Judge that according to the testing result information of high level feedback retransmission data packet may is new data or the mistake of said continuous dispatching packet retransmitted, retransmit, then abandon this retransmission data packet may if retransmission data packet may is a mistake to said continuous dispatching packet; Otherwise, keep this retransmission data packet may;
Here, can employing wireless controlling links (RLC) when carrying out Data Detection the duplicate detection function of layer or physical layer, rlc layer or physical layer are carried out duplicate detection and detection feedback object information to said retransmission data packet may.
Step 44 can be refined as:
Step S11: decoding failure feedback is sent to the base station in the terminal;
Step S12: the base station receives decoding failure feedback; According to feedback channel and the time difference of sending packet; Judge that this feedback is to the continuous dispatching packet; In all data that need retransmit the re-transmission of priority scheduling continuous dispatching packet and in dispatch for the process identification (PID) of said continuous dispatching allocation of packets, be specially: send dispatch and retransmission data packet may to the terminal, comprise the process identification (PID) of distribution in the dispatch; Later on the re-transmission of said continuous dispatching packet is all adopted the process identification (PID) of said distribution;
Here, when a plurality of continuous dispatching packets needs retransmitted, the base station was by their re-transmission of sequencing scheduling and the distribution process sign of initial transmission.
Step S13: the terminal receives retransmission data packet may on the resource of dispatch indication, the initial transmitted data packet in retransmission data packet may and the buffer memory is retransmitted merge and decoding, and the process number with this buffer memory corresponds to the process number in the said dispatch simultaneously.
With specific embodiment method of the present invention is described below:
Embodiment one:
As shown in Figure 5, in the present embodiment, process 5 (process5) is to initial transmission and the packet that retransmits the employing dynamic dispatching, and process 6 (process6) is to adopt continuous dispatching, retransmit the packet that adopts dynamic dispatching to initial transmission, and is specific as follows:
Step 50: the base station sends to the terminal that to comprise process number be 5 dispatch and corresponding packet, dispatch and data-bag lost;
Step 51: the packet of process 6 is sent in the base station to the terminal;
Step 52: the packet of the process 6 that the terminal will receive on the predefine resource is put into buffer memory;
Step 53: terminal this packet of correctly decoding, send the ACK feedback message to the base station;
Step 54: ACK that base station judges is received feedback is to the process 6 of continuous dispatching;
Step 55: it is 5 dispatch and corresponding packet that the base station comprises process number to terminal re-sends;
Step 56: the terminal does not abandon when receiving the packet of process 5, detects by routine data, judges that according to high layer information this packet is that the new data or the mistake of continuous dispatching 6 packets retransmit at last, and is specific as follows:
Steps A: said packet is decoded,, then arrive step D if decoding is correct; Otherwise, to step B;
Step B: send the NACK feedback to the base station, the retransmission data packet may and the dispatch of process 5 were sent in the re-transmission of dispatching process 5 when the NACK feedback was received in the base station to the terminal;
Step C: the terminal retransmits merging and decoding with the initial transmitted data packet of retransmission data packet may of receiving and process 5, if decoding is correct, arrives step D; Otherwise, return step B;
Step D: the correctly-decoded data bag is submitted to high level (like rlc layer), by high level this packet is carried out the repeating data detection and judge that this packet is a new data, judged result information is issued the terminal, buffer memory is carried out with the correctly-decoded data bag in the terminal.
Step 57: the ACK feedback message is sent to the base station in the terminal.
So far, the packet of process 5 is correctly received.
Embodiment two:
Shown in Fig. 6 A, in the present embodiment, process 5 (process5) is to initial transmission and the packet that retransmits the employing dynamic dispatching, and process 6 (process6) is to adopt continuous dispatching, retransmit the packet that adopts dynamic dispatching to initial transmission, and is specific as follows:
Step 60: the base station sends to the terminal that to comprise process number be 5 dispatch and corresponding packet, dispatch and data-bag lost;
Step 61: the packet of process 6 is sent in the base station to the terminal;
Step 62: the packet that the terminal will receive on the predefine resource is put into buffer memory, the corresponding process number process of this buffer memory temp;
Step 63: this packet failure of decoding terminals, send the NACK feedback message to the base station;
Step 64: NACK that base station judges is received feedback is to the process 6 of continuous dispatching;
Step 65: the re-transmission of the process 6 of base station priority scheduling continuous dispatching, send dispatch and the retransmission data packet may that comprises process number 6 to the terminal;
Step 66: the terminal receives retransmission data packet may on the resource of dispatch indication, the packet among retransmission data packet may and the buffer memory process temp is retransmitted merging, and the process number of this buffer memory is updated to process 6;
Step 67: the ACK feedback message is sent to the base station in the terminal;
Step 68: the retransmission data packet may of base station scheduling process 5, send dispatch and the retransmission data packet may that comprises process number 5 to the terminal;
Step 69: the retransmission data packet may of terminal receiving process 5 on the resource of dispatch indication, the re-transmission union operation that needs after carrying out.
So far, the packet of process 6 has obtained correct decoding, and the packet of process 5 also obtained correct transmission, does not lose.
Embodiment three:
Shown in Fig. 6 B, present embodiment is the embodiment that retransfer scheduling is carried out in the base station when having a plurality of continuous dispatching packets needs to retransmit, and is specific as follows:
Step 601: the initial transmitted data packet of continuous dispatching 1 is sent in the base station to the terminal;
Step 602: the initial transmitted data packet 2 of continuous dispatching 2 is sent in the base station to the terminal;
Step 603: the packet failure of decoding terminals continuous dispatching 1, send the NACK feedback message to the base station;
Step 604: the packet failure of decoding terminals continuous dispatching 2, send the NACK feedback message to the base station;
Step 605: the re-transmission of continuous dispatching 1 is at first dispatched by the sequencing of initial transmission in the base station, sends the retransmission data packet may and the dispatch of continuous dispatching 1 to the terminal, comprises process number 1 in this dispatch; The terminal retransmits the retransmission data packet may of receiving and the initial transmitted data packet of the continuous dispatching 1 of buffer memory and merges and decoding;
Step 606: the base station is dispatched the re-transmission of continuous dispatching 2 again, sends the retransmission data packet may and the dispatch of continuous dispatching 2 to the terminal, comprises process number 2 in this dispatch; The terminal retransmits the retransmission data packet may of receiving and the initial transmitted data packet of the continuous dispatching 2 of buffer memory and merges and decoding.
Referring to Fig. 7, the embodiment of the invention also provides a kind of treatment system of data packets in semi-persistent scheduling, and this system comprises:
First receiving element is used to receive said continuous dispatching packet;
Judging unit is used for said continuous dispatching packet is decoded, and judges whether decoding is successful;
Detecting unit is used for after said judgment unit judges is decoded successfully, and the follow-up retransmission data packet may that has new process identification (PID) that receives is carried out Data Detection;
Processing unit; Be used for judging that according to the testing result of said Data Detection said retransmission data packet may is new data or the mistake of said continuous dispatching packet retransmitted; In said retransmission data packet may is when the mistake of said continuous dispatching packet is retransmitted, and abandons said retransmission data packet may.
Feedback unit is used for sending the successfully feedback of decoding to said base station;
Second receiving element is used to receive the dispatch from the base station, on the resource of this dispatch indication, receives the said retransmission data packet may that has new process number;
The feedback receiving element is used to receive said decoding and successfully feeds back;
Scheduling unit is used for said retransmission data packet may and the dispatch that has new process number sent to said terminal.
Still referring to Fig. 7, the embodiment of the invention also provides a kind of treatment system of data packets in semi-persistent scheduling, and this system comprises:
Transmitting element is used for the initial transmitted data packet to terminal transmission continuous dispatching;
Scheduling unit is used to receive said decoding failure feedback, the re-transmission of priority scheduling continuous dispatching packet and be the process identification (PID) of said continuous dispatching allocation of packets in dispatch;
First receiving element is used to receive said continuous dispatching packet;
Judging unit is used for said continuous dispatching packet is decoded, and judges whether decoding is successful;
Feedback unit is used for when said judgment unit judges decoding is not successful, sending decoding failure feedback to said base station;
Second receiving element is used to receive the retransmission data packet may of the process identification (PID) that has said distribution;
Processing unit is used for said retransmission data packet may and said initial transmitted data packet are retransmitted merging and decoding.
Feedback unit is used for when the decoding failure of said processing unit, sending decoding failure feedback to said base station once more;
Retransmission unit is used to receive said decoding failure feedback, said continuous dispatching packet is retransmitted once more, and comprise the process identification (PID) of said distribution in the dispatch.
Said scheduling unit is used for:
When a plurality of continuous dispatching packets needs retransmit, dispatch the re-transmission and the distribution process sign of said a plurality of continuous dispatching packets by the sequencing of initial transmission.
Still referring to Fig. 7, the embodiment of the invention also provides a kind of treatment system of data packets in semi-persistent scheduling, and this system comprises:
If success is then sent the successfully feedback of decoding to the base station, and the follow-up retransmission data packet may that has new process identification (PID) that receives is carried out Data Detection; Judging that according to testing result said retransmission data packet may is new data or the mistake of said continuous dispatching packet retransmitted, is mistake to said continuous dispatching packet when retransmitting in said retransmission data packet may, abandons said retransmission data packet may;
If not success is then sent decoding failure feedback to the base station; The retransmission data packet may of the process identification (PID) that has said distribution that just receives and said initial transmitted data packet retransmit and merge and decoding.
Referring to Fig. 8, the embodiment of the invention also provides a kind of terminal, can be applied in the treatment system of data packets in semi-persistent scheduling, and this terminal comprises:
First receiving element 80 is used to receive the initial transmitted data packet from the continuous dispatching of base station;
Judging unit 81 is used for said continuous dispatching packet is decoded, and judges whether decoding is successful;
Detecting unit 82 is used for when judgement is decoded successfully, the follow-up retransmission data packet may that has new process identification (PID) that receives being carried out Data Detection;
Processing unit 83 is used for judging that according to testing result said retransmission data packet may is new data or the mistake of said continuous dispatching packet retransmitted, and is mistake to said continuous dispatching packet when retransmitting in said retransmission data packet may, abandons said retransmission data packet may.
This terminal further comprises:
Second receiving element 85 is used to receive the dispatch from the base station, on the resource of this dispatch indication, receives the said retransmission data packet may that has new process number.
Referring to Fig. 9, the embodiment of the invention also provides a kind of base station, can be applied in the treatment system of data packets in semi-persistent scheduling, and this base station comprises:
Transmitting element 90 is used for the initial transmitted data packet to terminal transmission continuous dispatching;
This base station further comprises:
When a plurality of continuous dispatching packets needs retransmit, dispatch the re-transmission and the distribution process sign of said a plurality of continuous dispatching packets by the sequencing of initial transmission.
To sum up, beneficial effect of the present invention is:
In the scheme that the embodiment of the invention provided; When the terminal is also decoded successfully at the packet that receives continuous dispatching; The follow-up retransmission data packet may that has new process identification (PID) that receives is not abandoned, but carry out Data Detection, whether decision abandons this packet according to testing result; When receiving packet but the decoding failure of continuous dispatching at the terminal; The re-transmission of base station priority scheduling continuous dispatching packet and be the process identification (PID) of continuous dispatching allocation of packets, the terminal with the retransmission data packet may of receiving with fail the initial transmitted data packet of correct decoding and retransmit and merge and decoding.It is thus clear that the terminal is through whether decision abandons the retransmission data packet may that has new process identification (PID) according to Data Detection; And the re-transmission of base station priority scheduling continuous dispatching packet during to the failure of the decoded packet data of continuous dispatching at the terminal, can avoid losing and receiving confusion of packet.
Simultaneously, the scheme that the embodiment of the invention provided need not increase the data flow procedure of new signaling consumption and letter, on original transmission flow process, realizes, can save the signaling consumption of system greatly, and realizes simple.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior
Claims (18)
1. the processing method of a data packets in semi-persistent scheduling is characterized in that, this method comprises:
The terminal receives the initial transmitted data packet of base station continuous dispatching, and whether judgement is successful to the decoding of said continuous dispatching packet, if success is then carried out Data Detection with the follow-up retransmission data packet may that has new process identification (PID) that receives;
Judging that according to testing result whether said retransmission data packet may is that mistake to said continuous dispatching packet retransmits, is mistake to said continuous dispatching packet when retransmitting in said retransmission data packet may, abandons said retransmission data packet may.
2. the method for claim 1 is characterized in that, after judging and to said retransmission data packet may, carry out Data Detection to said continuous dispatching decoded packet data success before, this method further comprises:
The successfully feedback of decoding is sent to said base station in said terminal;
Said base station receives after said decoding successfully feeds back, and has the retransmission data packet may of new process identification (PID) and the dispatch of this packet sends to said terminal with said;
Said terminal receives the said retransmission data packet may that has new process identification (PID) on the resource of said dispatch indication.
3. the method for claim 1 is characterized in that, said Data Detection comprises:
The data duplicate detection of Radio Link control rlc layer.
4. the processing method of a data packets in semi-persistent scheduling is characterized in that, this method comprises:
The terminal receives the initial transmitted data packet of base station continuous dispatching, and whether judgement is successful to the decoding of said continuous dispatching packet, if success is sent the feedback of failing of decoding to said base station;
The base station receives said decoding failure feedback; According to feedback channel and the time difference of sending packet; Judge that this feedback is to the continuous dispatching packet; In all data that need retransmit the re-transmission of priority scheduling continuous dispatching packet and in dispatch for the process identification (PID) of said continuous dispatching allocation of packets, be specially: send dispatch and retransmission data packet may to the terminal, comprise the process identification (PID) of distribution in the dispatch; Later on the re-transmission of said continuous dispatching packet is all adopted the process identification (PID) of said distribution;
Said terminal receives the said retransmission data packet may of the process identification (PID) that has said distribution on the resource of said dispatch indication, retransmission data packet may that receives and said initial transmitted data packet are retransmitted merging and decoding.
5. method as claimed in claim 4 is characterized in that, if said re-transmission merges and the decoding failure, this method further comprises:
Decoding failure feedback is sent to said base station in said terminal;
Said base station retransmits said continuous dispatching packet once more, and comprises the process identification (PID) of said distribution in the dispatch.
6. method as claimed in claim 4 is characterized in that, when a plurality of continuous dispatching packets needs retransmitted, the re-transmission and the distribution process sign of said a plurality of continuous dispatching packets dispatched in the base station by the sequencing of initial transmission.
7. the processing method of a data packets in semi-persistent scheduling is characterized in that, this method comprises:
Whether the terminal receives the initial transmitted data packet of base station continuous dispatching, judge the decoding of said continuous dispatching packet successful;
If success is then carried out Data Detection with the follow-up retransmission data packet may that has new process identification (PID) that receives; Judging that according to testing result whether said retransmission data packet may is that mistake to said continuous dispatching packet retransmits, is mistake to said continuous dispatching packet when retransmitting in said retransmission data packet may, abandons said retransmission data packet may;
If not success is sent decoding failure feedback to said base station; The base station receives said decoding failure feedback, the re-transmission of priority scheduling continuous dispatching packet and be the process identification (PID) of said continuous dispatching allocation of packets; The retransmission data packet may of the process identification (PID) that has said distribution that said terminal will receive and said initial transmitted data packet retransmit and merge and decoding.
8. the treatment system of a data packets in semi-persistent scheduling is characterized in that, this system comprises:
The base station is used for sending the initial transmitted data packet of continuous dispatching and the retransmission data packet may of dynamic dispatching to the terminal;
The terminal comprises first receiving element, judging unit, detecting unit and processing unit, and said first receiving element is used to receive the initial transmitted data packet of said continuous dispatching; Said judging unit is used for the initial transmitted data packet of said continuous dispatching is decoded, and judges whether decoding is successful; Said detecting unit is used for after said judgment unit judges is decoded successfully, and the follow-up retransmission data packet may that has new process identification (PID) that receives is carried out Data Detection; Said processing unit; Be used for judging according to the testing result of said Data Detection whether said retransmission data packet may is the mistake re-transmission to the initial transmitted data packet of said continuous dispatching; In said retransmission data packet may is mistake to the initial transmitted data packet of said continuous dispatching when retransmitting, and abandons said retransmission data packet may.
9. system as claimed in claim 8 is characterized in that, said terminal further comprises:
Feedback unit is used for sending the successfully feedback of decoding to said base station;
Second receiving element is used to receive the dispatch from the base station, on the resource of this dispatch indication, receives the said retransmission data packet may that has new process number;
Said base station comprises:
The feedback receiving element is used to receive said decoding and successfully feeds back;
Scheduling unit is used for said retransmission data packet may and the dispatch that has new process number sent to said terminal.
10. the treatment system of a data packets in semi-persistent scheduling is characterized in that, this system comprises:
The base station comprises transmitting element and scheduling unit, and said transmitting element is used for the initial transmitted data packet to terminal transmission continuous dispatching; Said scheduling unit is used to receive said decoding failure feedback, the re-transmission of priority scheduling continuous dispatching packet and be the process identification (PID) of said continuous dispatching allocation of packets;
The terminal comprises first receiving element, judging unit, feedback unit, second receiving element and processing unit, and said first receiving element is used to receive said continuous dispatching packet; Said judging unit is used for said continuous dispatching packet is decoded, and judges whether decoding is successful; Feedback unit is used for when said judgment unit judges decoding is not successful, sending decoding failure feedback to said base station; Second receiving element is used to receive the retransmission data packet may of the process identification (PID) that has said distribution; Processing unit is used for said retransmission data packet may and said initial transmitted data packet are retransmitted merging and decoding.
11. system as claimed in claim 10 is characterized in that, said terminal further comprises:
Feedback unit is used for when the decoding failure of said processing unit, sending decoding failure feedback to said base station once more;
Said base station further comprises:
Retransmission unit is used to receive the decoding failure feedback that said feedback unit once more sends, and said continuous dispatching packet is retransmitted once more, and comprise the process identification (PID) of said distribution in the dispatch.
12. system as claimed in claim 10 is characterized in that, said scheduling unit is used for:
When a plurality of continuous dispatching packets needs retransmit, dispatch the re-transmission and the distribution process sign of said a plurality of continuous dispatching packets by the sequencing of initial transmission.
13. the treatment system of a data packets in semi-persistent scheduling is characterized in that, this system comprises:
The base station comprises transmitting element, feedback receiving element, scheduling unit; Said transmitting element is used for the initial transmitted data packet to terminal transmission continuous dispatching; Said feedback receiving element is used for receiving the successfully feedback of decoding; Said scheduling unit is used for sending the retransmission data packet may that has new process number to the terminal; Receiving when feedback decoding failure, the re-transmission of priority scheduling continuous dispatching packet and be the process identification (PID) of said continuous dispatching allocation of packets;
The terminal comprises first receiving element, judging unit, detecting unit, processing unit, feedback unit and second receiving element, and said first receiving element is used to receive said continuous dispatching packet; Said judging unit is used for said continuous dispatching packet is decoded, and judges whether decoding is successful; Said detecting unit is used for after said judgment unit judges is decoded successfully, sends the successfully feedback of decoding to the base station, and the follow-up retransmission data packet may that has new process identification (PID) that receives is carried out Data Detection; Said processing unit; Be used for judging according to the testing result of said Data Detection whether said retransmission data packet may is the mistake re-transmission to said continuous dispatching packet; In said retransmission data packet may is when the mistake of said continuous dispatching packet is retransmitted, and abandons said retransmission data packet may; Said feedback unit is used for when said judgment unit judges decoding is not successful, sending decoding failure feedback to said base station; Said second receiving element is used to receive the retransmission data packet may of the process identification (PID) that has said distribution; Said processing unit also is used for the said retransmission data packet may and the said initial transmitted data packet of the process identification (PID) that has said distribution are retransmitted merging and decoding.
14. a terminal is characterized in that, this terminal comprises:
First receiving element is used to receive the initial transmitted data packet from the continuous dispatching of base station;
Judging unit is used for said continuous dispatching packet is decoded, and judges whether decoding is successful;
Detecting unit is used for when judgement is decoded successfully, the follow-up retransmission data packet may that has new process identification (PID) that receives being carried out Data Detection;
Processing unit is used for judging that according to testing result whether said retransmission data packet may is that mistake to said continuous dispatching packet retransmits, and is mistake to said continuous dispatching packet when retransmitting in said retransmission data packet may, abandons said retransmission data packet may.
15. terminal as claimed in claim 14 is characterized in that, this terminal further comprises:
Feedback unit is used for sending the successfully feedback of decoding to said base station;
Second receiving element is used to receive the dispatch from the base station, on the resource of this dispatch indication, receives the said retransmission data packet may that has new process number.
16. a base station is characterized in that, this base station comprises:
Transmitting element is used for the initial transmitted data packet to terminal transmission continuous dispatching;
Scheduling unit; Be used to receive the decoding failure feedback of self terminal; According to feedback channel and the time difference of sending packet, judge this feedback to the continuous dispatching packet, the re-transmission of priority scheduling continuous dispatching packet and be the process identification (PID) of said continuous dispatching allocation of packets in all data that need retransmit in dispatch; Be specially: send dispatch and retransmission data packet may to the terminal, comprise the process identification (PID) of distribution in the dispatch; Later on the re-transmission of said continuous dispatching packet is all adopted the process identification (PID) of said distribution.
17. base station as claimed in claim 16 is characterized in that, this base station further comprises:
Retransmission unit is used to receive the failure of decoding once more to said continuous dispatching packet of self terminal to feed back, and said continuous dispatching packet is retransmitted once more, and comprise the process identification (PID) of said distribution in the dispatch.
18. base station as claimed in claim 16 is characterized in that, said scheduling unit is used for:
When a plurality of continuous dispatching packets needs retransmit, dispatch the re-transmission and the distribution process sign of said a plurality of continuous dispatching packets by the sequencing of initial transmission.
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| CN102013962B (en) * | 2009-09-04 | 2014-07-30 | 华为技术有限公司 | Data transmission method and equipment |
| CN102158973B (en) * | 2010-02-11 | 2013-11-20 | 电信科学技术研究院 | Method, system and equipment for semi-duration dispatching, transmitting and processing |
| CN102236542B (en) | 2010-05-05 | 2014-06-11 | 中兴通讯股份有限公司 | Hardware control implementation method and hardware control implementation device based on task process table |
| CN102264039B (en) | 2011-04-29 | 2013-12-11 | 电信科学技术研究院 | Method and device for implementing semi-continuous scheduling transmission |
| CN106961430B (en) * | 2017-03-16 | 2022-12-23 | 山东蓝海数据科技有限公司 | Physical isolation transmission method and physical isolation transmission device based on two-dimensional code |
| CN109450602B (en) * | 2018-10-18 | 2020-04-14 | 无锡北邮感知技术产业研究院有限公司 | Data transmission method and device and electronic equipment |
| CN111262662B (en) | 2018-12-14 | 2022-01-28 | 维沃移动通信有限公司 | Data sending method and terminal |
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